Abstract

Coastal lagoons are highly connected to the sea and many fish species enter into these environmentsremaining there for short periods. The European anchovy, Engraulis encrasicolus (L.), is a speciesintensely exploited by fishing in the Adriatic Sea, and it occurs in the Lagoon of Lesina only during thespring-summer months, when it finds in the lagoon suitable environmental conditions that could enhancethe fitness of individuals. The purpose of this work was to characterize the European anchovy populationin the Lagoon of Lesina, by studying the reproductive biology and estimating the age, size and growthparameters of the specimens. The study also aimed at identifying any relationship between the growth andmaturity of anchovy and some environmental parameters. To achieve this goal, samples of Europeananchovy were collected about every fifteen days between May and September 2012, using fyke-nets. Atthe same time, water temperature, salinity, oxygen concentration and pH were measured with amultiparametric probe. In addition, water samples were collected for the chlorophyll a and suspendedparticulate matter measurements, and to describe phytoplankton assemblages of the lagoon. In thelaboratory, each specimen was measured and weighted; the otoliths were removed and stored dry inlabelled envelopes for age determination. The sex was determined and the fish gonads weremacroscopically classified. Moreover, gonad samples (at least 10 specimens for each sampling) werefixed in 4% buffered formalin for histological analysis. Water samples for photosynthetic pigments weresequentially filtered to separate three size classes: total, micro- and nano-phytoplankton forspectrofluorometric measurements. Water samples for total suspended solids were filtered and dried toestimate their concentrations. The phytoplankton cells were counted and identified by invertedmicroscope and the organisms were classified and grouped into three main taxonomic components:diatoms, dinoflagellates and others. The most significant results are illustrated.

Autore Pugliese

• Fabbrocini Adele , Specchiulli Antonietta , Cilenti Lucrezia , D'adamo Raffaele

Tutti gli autori

• MANZO C.; CILENTI L.; FABBROCINI A.; MASELLI M.; SPECCHIULLI A.; D'ADAMO R.

Titolo volume/Rivista

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Anno di pubblicazione

2012

ISSN

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ISBN

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Numero di citazioni Wos

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Settori ERC

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Codici ASJC

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